| Variables | Cut-off | AUC | Sensitivity | Specificity | PPV | NPV | Accuracy |
| Urea (mg/dL) | >4 | 98.8 | 96% | 95% | 96% | 95% | 95.56% |
| Creatinine (mg/dL) | >0.68 | 93.7 | 92% | 100% | 100% | 90.91% | 95.56% |